Yeah this ZMR250 frame needs the thick 4mm arms to prevent breaking during crashes. I bought a ton of 3mm arms and broke one nearly every crash or oops landing. since the 4mm arm upgrade the frame is...

I can share some flying clips. i'm not ready to post to youtube yet though. I had/have some of that same gear. i'll post some spec and photos. its basically a armmattan chameleon frame foxeer arrow 2...